US5333397A - Inflatable ventilating insole - Google Patents
Inflatable ventilating insole Download PDFInfo
- Publication number
- US5333397A US5333397A US08/016,964 US1696493A US5333397A US 5333397 A US5333397 A US 5333397A US 1696493 A US1696493 A US 1696493A US 5333397 A US5333397 A US 5333397A
- Authority
- US
- United States
- Prior art keywords
- bladder
- insole
- air
- heel
- ventilating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B17/00—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined
- A43B17/08—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined ventilated
Definitions
- This invention relates to insoles for shoes and boots, and more particularly to an inflatable air-ventilating insole.
- the physiology of the human foot and the biomechanics of how it functions during walking make the motion of the foot within a shoe very predictable.
- the foot basically makes an "S" pattern during walking. At the beginning of each step the foot strikes the ground on the outside edge of the heel. A lateral line drawn across the base of the heel would be about a five to ten degree angle relative to the walking surface.
- the second phase is called pronation. This occurs when the weight bearing part of the foot transfers through a rolling motion, from the outside or lateral edge of the calcaneus across to the medial or inside portion of the ankle at the base of the tibia, and rests very briefly on the medial longitudinal arch. The weight at this point is resting on an arched structure whose points of contact are the first metatarsal head and the calcaneus. At this point, the flesh around the perimeter of the heel is displaced laterally from the calcaneus.
- an insole for ventilating a shoe is provided.
- the apparatus of the present invention comprises an insole for ventilating the shoe of a person.
- the insole includes fore, arch, and heel portions and comprises an inflatable elastic bladder, an air intake passage, air exhaust passages, and ventilating capillaries.
- the bladder is located along the rear and inner peripheral area of the heel portion of the shoe.
- the location of the bladder is important for several reasons. First, it allows for sufficient cushioning of the heel. Second, it takes advantage of the physiology of the foot during walking to efficiently ventilate the shoe. As the foot rolls during the pronation stage of the walking motion, it pushes air along the bladder and allows the bladder to refill behind it. Third, it takes advantage of the spreading effect of the heel. The flesh around the perimeter of the heel is laterally displaced when weight is applied to the heel. Thus, there is pressure on the peripheral area of the heel portion of the insole only when the heel is bearing weight. Fourth, there is no pressure on the bladder while the foot is in the air. As a result, the bladder is allowed to fully reinflate between successive compressions by the heel.
- the bladder includes an inlet port in fluid communication with the air intake passage and an air discharge port in fluid communication with air exhaust passages.
- the air intake passage is vented to the outer environment of the shoe.
- the air exhaust passages open to the inner environment of the shoe through the ventilating capillaries.
- FIG. 1 is a perspective view of one embodiment of a ventilating insole according to the present invention, shown inserted in a shoe, portions thereof being broken away and shown in section;
- FIG. 2 is a top view of the insole of FIG. 1, portions thereof being broken away and portions being shown in section;
- FIG. 3 is a top view of a second embodiment of a ventilating insole, similar to that of FIG. 2;
- FIG. 4 is a cross-sectional view of the insole shown in FIG. 2, taken generally along the line 4--4 in FIG. 2.
- FIGS. 1, 2, and 4 there is illustrated one embodiment of a ventilating insole 20.
- the ventilating insole 20 is shown in FIG. 1 inserted into a standard walking shoe 10, the insole can be used with a variety of other walking devices, including athletic shoes and work boots.
- the shoe 10 comprises an upper 16 having a heel portion 18, and has an inner environment 12 and an outer environment 14.
- the insole 20 comprises fore 30, arch 40, and heel 50 portions.
- the heel portion 50 includes a generally centrally located heel support area 51, a peripheral edge 52, and a peripheral area 53 extending therebetween.
- the fore portion 30 includes an upper surface 34, and the arch portion 40 includes an inner edge 42.
- An inflatable elastic bladder 60 is formed primarily along the peripheral area 53 of the heel portion 50.
- the bladder 60 is preferably formed substantially along the rear 54 and inner 58 peripheral portions of the peripheral area 53 and is preferably of a kidney shape in a generally horizontal plane of the insole, extending through the peripheral edge 52 of the heel portion 50 of the insole 20.
- a variety of shapes formed along the peripheral area 53 of the heel portion 50 could be employed.
- the inflatable elastic bladder 60 includes an inlet port 61 and a discharge port 62. However, it will be understood by those skilled in the art that a number of inlet 61 or discharge 62 ports could be added.
- the inlet port 61 is preferably located at the outer side 56 of the rear peripheral portion 54, and the discharge port 62 is preferably located at the foremost end of the inflatable elastic bladder 60.
- An air intake passage 64 extends to the inflatable elastic bladder 60 proximate the inlet port 61 and provides fluid communication between the air intake passage 64 and the bladder 60.
- the air intake passage 64 could take a variety of shapes and sizes, the preferred embodiment employs an air intake tube 65.
- the air intake tube 65 extends through the base of the upper 60 via a pressure fit. It is then generally vertically disposed along the outer wall of the heel portion 18 of the upper 60.
- the air intake tube 65 is preferably disposed from the outer side 56 of the rear peripheral portion 54 of the insole 20. This location is chosen to reduce the possibility of pinching off inlet air flow, while maintaining wearer comfort.
- an air exhaust passage 66 in fluid communication with the inflatable elastic bladder 60 proximate the discharge port 62, extends to the inner edge 42 of the arch portion 40.
- the air exhaust passage 66 can include a plurality of branches, as illustrated by the second preferred embodiment 100 in FIG. 3, which may also split into successive branches.
- the air exhaust passages 66 can also take a variety of shapes and sizes other than the channels employed in the preferred embodiment.
- a ventilating capillary 68 opens from the air exhaust passage 66 to the inner environment 12 of the shoe 10.
- the ventilating capillaries 68 can open from the terminus of an air exhaust passage 66, as illustrated by the first preferred embodiment 20 in FIG. 2, or they may open at various points along an air exhaust passage 66, as illustrated by the second preferred embodiment 100 in FIG. 3.
- an inlet valve 72 and a discharge valve 74 are employed to control air flow from the outer environment 14 to the ventilating capillaries 68.
- the inlet valve 72 is preferably positioned in the inlet port 61 of the bladder 60 and the discharge valve 74 is preferably positioned in the discharge port 62 of the bladder 60.
- the inlet 72 and discharge 74 valves can be positioned in a variety of locations along the air intake passage 64 and the air exhaust passage 66, respectively.
- the valves 72, 74 are preferably one-way valves. It will be understood that a single one-way valve 70 could be employed, although with less efficient functioning of the ventilating insole 20.
- the ventilating insole 20 can function without any valves by using physics principles to restrict air flow at different stages of the walking step.
- the one-way valves 70 used in the preferred embodiment are flapper valves. Those skilled in the art, however, will recognize that a variety of other one-way valves 70 could be employed.
- the basic operation of the preferred embodiment of the ventilating insole 20 is as follows. Air is sucked into the bladder 60 through the air intake tube 65. After the heel strikes the ground the air inlet valve 72 closes and air is rolled by the natural motion of the foot toward the air discharge port 62 where the discharge valve 74 has opened under pressure. Air is expelled through the air exhaust passages 66 and out the ventilating capillaries 68 as the bladder 60 deflates. The increased air pressure inside the shoe 10 forces moist air out through the semipermeable upper 16, replenishing the inner environment 12 of the shoe 10 with fresh air. As the foot is lifted and pressure is removed from the bladder 60, the vacuum created by the reexpanding bladder 60 closes the discharge valve 74 and opens the inlet valve 72 to allow more fresh air to enter the bladder 60.
- the inflatable elastic bladder 60 and air exhaust passages 66 are formed between a semi-rigid lower layer 80 and a flexible layer 90.
- the bladder 60 and the air exhaust passages 66 can be formed in a variety of ways within the insole 20, such as employing a balloon-type sack or tubing, respectively.
- the semi-rigid layer 80 has bladder 84 and passage 86 depressions in its upper surface 82.
- the flexible layer 90 is glued to the upper surface 82 of the semi-rigid layer 80, forming the inflatable elastic bladder 60 and the exhaust passages 66.
- the flexible layer 90 is made of a sponge-like material which elastically reverts to its normal shape after decompression, causing reinflation of the bladder 60 between successive compressions.
- the semi-rigid layer 80 is preferably manufactured from a dense polyether urethane, such as blown AS URETHANE, and the flexible layer 90 is preferably made of a polyether urethane foam, such as PORON 4000.
- a dense polyether urethane such as blown AS URETHANE
- the flexible layer 90 is preferably made of a polyether urethane foam, such as PORON 4000.
- the flapper valves 70 employed in the preferred embodiment are thin L-shaped pieces of rubber. They are glued in place between the semi-rigid 80 and flexible 90 layers.
- the air intake tube 65 in the preferred embodiment consists of capillary tubing which is cemented between the semi-rigid 80 and flexible 90 layers proximate the air inlet port 61.
- a sock lining of woven nylon, such as CAMBRELLE could be added to the upper surface of the flexible layer 90 to control perspiration between the foot and the flexible layer 90.
- the ventilating insole 20 of the present invention is replaceable, should it loose its ventilating capability.
- the air intake tube 65 can be removed along with the insole 20 which can then be replaced with a new insole.
Abstract
Description
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US08/016,964 US5333397A (en) | 1993-02-12 | 1993-02-12 | Inflatable ventilating insole |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/016,964 US5333397A (en) | 1993-02-12 | 1993-02-12 | Inflatable ventilating insole |
Publications (1)
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US5333397A true US5333397A (en) | 1994-08-02 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US08/016,964 Expired - Fee Related US5333397A (en) | 1993-02-12 | 1993-02-12 | Inflatable ventilating insole |
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Cited By (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5813140A (en) * | 1997-06-30 | 1998-09-29 | Obeid; Abdelhakim R. | Ventilated shoe |
US5975861A (en) * | 1997-01-06 | 1999-11-02 | Shin; Bongseop | Pumping assembly for use in ventilated footwear |
US6044577A (en) * | 1998-09-28 | 2000-04-04 | Breeze Technology | Self-ventilating footwear |
US6079123A (en) * | 1998-09-28 | 2000-06-27 | Breeze Technology | Self-ventilating insert for footwear |
US6230501B1 (en) * | 1994-04-14 | 2001-05-15 | Promxd Technology, Inc. | Ergonomic systems and methods providing intelligent adaptive surfaces and temperature control |
US6477789B2 (en) * | 2000-12-05 | 2002-11-12 | Peter Cheng | Ventilated shoe insole having minimal height front region |
US20030121175A1 (en) * | 2002-01-03 | 2003-07-03 | Ilio Bertolami | Air-flow-sole-pump |
US20030140524A1 (en) * | 2001-10-25 | 2003-07-31 | Robinson Douglas K. | Dynamic and static cushioning footbed |
US20040010939A1 (en) * | 2001-09-24 | 2004-01-22 | Liu Chang Yuen | Shoes having ventilation devices |
US20050005473A1 (en) * | 2003-07-07 | 2005-01-13 | Oh Phillip J. | Self-cushion airflow shoes |
MD2970C2 (en) * | 2005-02-07 | 2006-09-30 | Владимир БЕЛОУСОВ | Insole with ventilation |
US20070214682A1 (en) * | 2006-03-17 | 2007-09-20 | Smotrycz Zenon O | Ventilated shoe sole construction with improved medical support |
US20070245594A1 (en) * | 2003-12-22 | 2007-10-25 | Aison Co., Ltd. | Insole assembly for increasing weight of footwear and heavy footwear having weight-increasing midsole/outsole |
US20080184592A1 (en) * | 2005-09-15 | 2008-08-07 | Alfred Cloutier Ltee | Adaptable Shoe Cover |
US7523565B1 (en) | 2006-02-21 | 2009-04-28 | Kuang Ming Chen | Shoes comprising air cushioning system, air lightweight system, and air pressure alert system |
EP2092841A1 (en) | 2008-02-22 | 2009-08-26 | Chung-Jen Lin | Cushion improved structure of shoe ventilating insole |
CN101874663A (en) * | 2010-05-20 | 2010-11-03 | 邹为国 | Ventilating insoles |
US20140223772A1 (en) * | 2002-07-02 | 2014-08-14 | Reebok International Limited | Shoe Having An Inflatable Bladder |
DE202015103670U1 (en) | 2015-07-13 | 2015-08-19 | Chung-Jen Lin | Breathable insole |
US20160081424A1 (en) * | 2013-09-19 | 2016-03-24 | Nike, Inc. | Ventilation System For An Article Of Footwear |
WO2017152251A1 (en) * | 2016-03-09 | 2017-09-14 | Grendene S.A. | Footwear sole and footwear with fluid exchange mechanisms |
US9943131B1 (en) * | 2014-07-31 | 2018-04-17 | Lacrosse Footwear, Inc. | Footwear airflow system |
US10010131B2 (en) | 2011-02-02 | 2018-07-03 | Implus Footcare, Llc | Flow insole |
CN108542043A (en) * | 2018-07-23 | 2018-09-18 | 张新举 | A kind of Ventilated shoe-pad |
US20180271208A1 (en) * | 2014-01-13 | 2018-09-27 | Alexander Litvinov | Ventilation Of Footwear |
CN108652128A (en) * | 2018-07-23 | 2018-10-16 | 张新举 | Ventilated shoe-pad |
US10433613B2 (en) * | 2014-01-13 | 2019-10-08 | Alexander Litvinov | Ventilation apparatus for footwear |
US11564450B2 (en) | 2019-01-11 | 2023-01-31 | Boot Bam, Inc. | Systems and methods for enhancing boot comfort and style |
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DE135259C (en) * | 1902-02-08 | |||
GB189906578A (en) * | 1899-03-27 | 1899-06-24 | Fabro Henri Del | Improvements in Boots and Shoes. |
US1804533A (en) * | 1929-09-26 | 1931-05-12 | Jandoc Antonio | Ventilated shoe |
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FR1024960A (en) * | 1950-04-26 | 1953-04-09 | Ventilation device for rubber boots | |
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Cited By (36)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6230501B1 (en) * | 1994-04-14 | 2001-05-15 | Promxd Technology, Inc. | Ergonomic systems and methods providing intelligent adaptive surfaces and temperature control |
US5975861A (en) * | 1997-01-06 | 1999-11-02 | Shin; Bongseop | Pumping assembly for use in ventilated footwear |
US5813140A (en) * | 1997-06-30 | 1998-09-29 | Obeid; Abdelhakim R. | Ventilated shoe |
US6044577A (en) * | 1998-09-28 | 2000-04-04 | Breeze Technology | Self-ventilating footwear |
US6079123A (en) * | 1998-09-28 | 2000-06-27 | Breeze Technology | Self-ventilating insert for footwear |
US6477789B2 (en) * | 2000-12-05 | 2002-11-12 | Peter Cheng | Ventilated shoe insole having minimal height front region |
US20040010939A1 (en) * | 2001-09-24 | 2004-01-22 | Liu Chang Yuen | Shoes having ventilation devices |
US6722059B2 (en) * | 2001-10-25 | 2004-04-20 | Acushnet Company | Dynamic and static cushioning footbed |
US20030140524A1 (en) * | 2001-10-25 | 2003-07-31 | Robinson Douglas K. | Dynamic and static cushioning footbed |
US20030121175A1 (en) * | 2002-01-03 | 2003-07-03 | Ilio Bertolami | Air-flow-sole-pump |
US9474323B2 (en) * | 2002-07-02 | 2016-10-25 | Reebok International Limited | Shoe having an inflatable bladder |
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